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1
Previously unpublished expedition sketches by Henry W. Elliott united with the Preliminary field report of the United States Geological Survey of Colorado and New Mexico, 1869, by F.V. Hayden digital archives /
[Denver, Colo.] : U.S. Dept. of the Interior, U.S. Geological Survey, 2003
Version 1.0.

Government Document Electronic Book
2
Finding history's forgotten people the presence of African Americans in Colorado, c. 1534 to 1954 /
by Neverdon-Morton, Cynthia, 1944-
[Denver] : [U.S. Dept. of the Interior, Bureau of Land Management], 2008

Government Document Electronic Book
3
Petroleum systems and geologic assessment of oil and gas in the Uinta-Piceance Province, Utah and Colorado
Denver, Colo. : U.S. Dept. of the Interior, U.S. Geological Survey, 2003
Version 1.0.

Government Document Electronic Book
4
Surficial geologic maps along the riparian zone of the Animas River and its headwater tributaries, Silverton to Durango, Colorado, with Upper Animas River Watershed gradient profiles
[Denver, CO] : U.S. Geological Survey : For sale by the USGS Information Services (Open-File Report Sales), 2002
Version 1.0.

Government Document Electronic Map
5
Petroleum systems and geologic assessment of oil and gas in the Southwestern Wyoming Province, Wyoming, Colorado, and Utah
Denver, Colo. : U.S. Dept. of the Interior, U.S. Geological Survey, 2005
Version 1.0.

Government Document Electronic Book
6
Investigation of water quality in the Great Sand Dunes National Monument and Preserve, Saguache County, Colorado, February 1999 through September 2000 qualifying for outstanding waters designation /
by Ferguson, Sheryl A.
[Pueblo, Colo.] : U.S. Dept. of the Interior, U.S. Geological Survey, 2003

Government Document Electronic Book
7
Digital data and derivative products from a high-resolution aeromagnetic survey of the central San Luis basin, covering parts of Alamosa, Conejos, Costilla, and Rio Grande Counties, Colorado, and Taos County, New Mexico
Reston, Va. : U.S. Dept. of the Interior, U.S. Geological Survey, 2005
Version 1.0.

Government Document Electronic Book
8
Assessment of undiscovered oil and gas resources of the Raton Basin-Sierra Grande Uplift Province of New Mexico and Colorado, 2004
[Reston, Va.] : U.S. Dept. of the Interior, U.S. Geological Survey, 2005

Government Document Electronic Book
9
Hydrogeochemical investigations of historic mining districts, central western slope of Colorado, including influence on surface-water quality
by Nash, J. Thomas (John Thomas), 1941-
[Reston, Va.] : Denver, CO : U.S. Dept. of the Interior, U.S. Geological Survey ; For sale by USGS Information Services, 2002
Version 1.0.

Government Document Electronic Book
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